Diagnostic approach in patients with angina and no obstructive coronary artery disease: emphasising the role of the coronary function test
SourceNetherlands Heart Journal, 29, 3, (2021), pp. 121-128
Article / Letter to editor
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Netherlands Heart Journal
SubjectRadboudumc 16: Vascular damage RIHS: Radboud Institute for Health Sciences; Radboudumc 16: Vascular damage RIMLS: Radboud Institute for Molecular Life Sciences
BACKGROUND: Many patients with angina do not have obstructive coronary artery disease (CAD), also referred to as "Ischaemia with No Obstructive Coronary Arteries" (INOCA). Coronary vascular dysfunction is the underlying cause of this ischaemic heart disease in as much as 59-89% of these patients, including the endotypes of coronary microvascular dysfunction and epicardial coronary vasospasm. Currently, a coronary function test (CFT) is the only comprehensive diagnostic modality to evaluate all endotypes of coronary vascular dysfunction in patients with INOCA. OBJECTIVE: In this paper we discuss the relevance of performing a CFT, provide considerations for patient selection, and present an overview of the procedure and its safety. METHODS: We reviewed the latest published data, guidelines and consensus documents, combined with a discussion of novel original data, to present this point of view. RESULTS: The use of a CFT could lead to a more accurate and timely diagnosis of vascular dysfunction, identifies patients at risk for cardiovascular events, and enables stratified treatment which improves symptoms and quality of life. Current guidelines recommend considering a CFT in patients with INOCA and persistent symptoms. The safety of the procedure is comparable to that of a regular coronary angiography with physiological measurements. Non-invasive alternatives have limited diagnostic accuracy for the identification of coronary vascular dysfunction in patients with INOCA, and a regular coronary angiography and/or coronary computed tomography scan cannot establish the diagnosis. CONCLUSIONS: A complete CFT, including acetylcholine and adenosine tests, should be considered in patients with INOCA.
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